William Flenley KC practises in the fields of professional liability, insurance, regulatory and contract law. He has appeared in a number of leading cases relating to the liability of professionals, including a trio of recent reported cases in the Court of Appeal: Addlesee v Dentons Europe [2020] Ch 243 (privilege), Group Seven v Notable Services [2020] Ch 129 (dishonest assistance in breach of trust), and Various Claimants v Giambrone & Law [2018] PNLR 2 (application of Saamco). He is co-author of the best known practitioners’ book on claims against solicitors, Flenley & Leech, The Law of Solicitors’ Liabilities. The first edition was published in 1999 and the fourth edition in August 2020.
William is a former Chairman of the Professional Negligence Bar Association. He has contributed to Cordery on Legal Services and Professional Negligence and Liability, was deputy editor of Lloyd’s Reports: Professional Negligence, and has lectured in law at the London School of Economics. He is a Bencher of the Middle Temple. He has been recommended as a leading barrister practising in professional liability by each of the two principal directories for many years and has been shortlisted in the Chambers Bar Awards 2020 as Professional Negligence Silk of the Year.
William is also a board member of Thames Reach, a homelessness charity.
Oxford (BA); Cornell University, New York (LLM); BCL.
London Bar
William Flenley KC –Hailsham Chambers ‘Clear, considered, detailed and well structured advice, both written and in conference. Understanding and considerate of views of clients. Always fabulously well prepared. Respectful and never too busy to discuss.'